While the historical roots of polarized politics in America run centuries deep [1]}, the rise of digital media and other online discourse platforms have led researchers to investigate how political polarization manifests and evolves in these more modern contexts. For example, Sunstein highlighted how “echo chambers” in online settings — where individuals with similar political views assemble to discuss particular issues — can enable mutually-reinforcing opinions to shift individual perspectives towards poles of greater extremity [2]}.
